PDD 26940 – Russula littorea Pennycook
Data provider:
New Zealand Fungarium - Te Kohinga Hekaheka o Aotearoa
Barcode:
PDD 26940
Type status:
Holotype
Specimen type:
Packet
Database record added:
11 April 2011
Database record updated:
24 February 2023
Components
Primary component
Active identification
Determined name:
Russula littorea
Determiner:
R.F.R. McNabb
Identification date:
Preferred name:
Russula littorea Pennycook
Division:
Basidiomycota
Class:
Agaricomycetes
Order:
Russulales
Family:
Russulaceae
Identification type:
Nomenclatural curation
Type status:
Holotype
Associations:
has host Leptospermum scoparium J.R.Forst. & G.Forst.
Substrate:
ground
Other identifications
Identification
Determined name:
Russula littoralis McNabb
Determiner:
R.F.R. McNabb
Identification date:
Preferred name:
Russula littorea Pennycook
Active:
no
Identification type:
Determination
Type status:
Holotype
Other components
Active identification
Determined name:
Leptospermum scoparium J.R.Forst. & G.Forst.
Determiner:
Identification date:
Preferred name:
Leptospermum scoparium J.R.Forst. & G.Forst.
Division:
Tracheophyta
Class:
Magnoliopsida
Order:
Myrtales
Family:
Myrtaceae
Identification type:
Determination
Present:
no
Collection events
Primary collection event
Collection event type:
Unknown
Standard locality
Location:
Bethells Beach
Georeferences:
Latitude and Longitude (WGS84):
-36.8931 174.444
Verbatim locality:
Bethells Beach
Verbatim collector:
R.F.R. McNabb
Standardised collector:
Robert F. R. McNabb
Collectors reference no.:
RFRM 50 (Russula)
Verbatim date:
1967/03/22
Start date:
1967-03-22
Country:
New Zealand
New Zealand Area Codes:
Auckland
Native lands:
Ngāti Tamaoho
Ngāti Whātua
Te Ākitai Waiohua
Te Kawerau a Maki
Georeferences:
New Zealand Map Grid:
2639530E 6477680N (WGS84 -36.893807 174.448983)
Specimen notes
Public Note:
[McNabb:] Holotype. #50(=19?). PILEUS:3-5.5 cm diam., convex and centrally depressed, finally infundibuliform, not viscid or only slightly so, glabrous, no indications of velar remnants, pallid creamy white, cream or creamy ochraceous. Margins entire, rather thick, not radially ridged and grooved. GILLS crowded, medium thickness, pallid creamy white, not discoloured at maturity, to 3 mm deep, lamellae simple or as often forked near stipe or up to half way between stipe and margins, lamellulae present, numerous, 2-ary, 3-ary, often in a partial sequence. STIPE: 2-3.5 cm long, more or less equal, 1.5 cm diam., dry, no indications of velar remnants, annulus absent, solid, finely granular-furfuraceous under lens, pure white to faintly creamy white. Flesh white, firm, unchanging. CONTEXT OF PILEUS; white, firm, unchanging. SMELL: not noted. TASTE gills extremely acrid, context slightly so. SPORE PRINT: poor print obtained but appears to be white, Crawshay A fresh. CHEMICAL REACTIONS Formalin on context - no reaction. Phenol on context - slowly deep red, vinaceous, FeS04 on context - pallid salmon pink. KOH on pileus - darkening slightly KOH on context - no reaction. NH40H on pileus and context - no reaction. HABITAT: In pairs or solitary under Leptospermum scoparium, Auckland, Bethel Beach, 22/3/67, Coll. R.F.R. McNabb. NOTE: The acrid gills are not typical of the species (by which McNabb meant R. cremeoochracea which he initially considered this to be). Cuticle composed of hyaline, thin-walled, septate hyphae 2.5-5um diam., +- interwoven, repent or obliquely ascending terminal cells unspecialised, pilocystidia numerous, of variable length, apices acuminate, capitulate, contents refractive in KOH, 4-8um diam., often xxx, 250-300um thick. Cuticle of stipe composed of interwoven hyphae and numerous caulocystidia with acuminate, strangulate or xxx apices, mainly superficial and often aggregated. Spores broadly elliptical obliquely apiculate, apiculus to 1.5(-2)um, 7-8.4 x 6.3-7.4um. Ornamentation of moderately dense amyloid verrucae to 0.7um high, isolated or joined by fine amyloid ridges and forming a partial reticulum. Note: spore ornamentation much more regular in size and shape and dense than in R. papakaiensis. Cheilocystidia numerous, similar to pleurocystidia but shorter. Basidia +- clavate hyaline 44-63 x 8.5-10.5um 4-spored, sterigmata to 6um long. Pleurocystidia extremely numerous, projecting to 15um beyond basidia, hyaline, thin-walled, contents refractive in KOH +- fusiform, apices capitulate, strangulate or acuminate 56-91 x 7.7-10.5um [Ridley:] Basidiospores 7-8 x(55-)6-6.5 um, [7-8.5 x 6-7.5 um], Qm 1.2, broadly ellipsoid (1.07-1.27, subglobose to ellipsoid, hyaline. Ornamented with moderately crowded, amyloid, verrucae to 0.75 inn, mostly isolated, or occasionally in confluent groups of 2 or 3. Suprahilar plage distinct, smooth, inamyloid, c. 2.75 um wide. Hilar appendix obconical, oblique, 1.25-1.75 um long. (Fig. 24d). This species exhibited basidiospore ornamentation type IV. In the original description the plage is described as indistinct, however both under the light microscope and the SEM it was observed to be quite distinct. [Cooper:] Taste described as extremely acrid. Fruitbody russuloid in shape, not lactarioid, and cap is glabrous (smooth and nearly shiny), and subcutis is microscopically gelatinised. Dried gills are a bit paler than the cap, but not orange. Cystidia fracturing with content bleeding into Melzers. Spores with clear plage and weak amyloid spot. Spores (excluding ornamentation) length=7.0–8.1µm (µ=7.5, σ=0.3), width=5.9–6.6µm (µ=6.2, σ=0.2), Q=1.2–1.3µm (µ=1.2, σ=0.0), n=16. The ornamentation and sub-cuticular gelatinised layer and numerous pilocystidia clearly distinguish this from allochroa. SV +ve, plentiful and non-septate. From Ridley's thesis and notes: again we find a weak amyloid spot and for Ridley it is strong. Spore measurements and SEM agree. McNabb's notes on the type say lamellulae are numerous and in a series. The type has them, but they are not obvious.
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